Philips Expression MR400 - Pre-Use System Checks

9‐8MonitoringAgentsandGases(AGENTOption) ExpressionMR400InstructionsforUse
WARNINGS
• Remove the sampling line from the patient airway whenever nebulized medications are
being delivered.
• Continuous exposure to waste anesthetic gases (including halogenated agents and
nitrous oxide) is not recommended. Always connect a line between the system’s waste
gas port and your facility’s gas scavenging/evacuation system. Avoid venting any waste
anesthetic gas directly into the room air as exposure to these gases above the
recommended OHSA limits could result.
• Do not block the waste gas port on the system. Ensure that the exhaust gas is not
removed from the system under too strong a vacuum. (To prevent this condition, there
must always be an opening to the room air.) Too high a vacuum level will change the
operating pressure of the system and cause inaccurate readings or internal damage.
• Use only approved sampling lines and AGENT accessories, as other sampling lines and
accessories will cause inaccurate readings and malfunctions.
• Replace the sampling line, replace the airway adapter, and inspect the water trap
between each patient use.
CAUTIONS
• Do NOT over-tighten the sampling line connection to the water trap; only a half-turn should
be needed. Over-tightening this connection may damage the water trap and cause failure of
the trap assembly.
• Regularly inspect the line to facility’s gas scavenging system for deterioration, and replace
the line if necessary.
Pre-Use System Checks
PriortousingthesystemforAGENTmonitoring,itisrecommendedthatthefollowinginitial
checksbeperformedatleastonce.
Step Action
1 Afterthepneumatictubinghasbeenpreparedasdirectedabove
(page9‐5),turn onthesystemandactivateAGENTintheMonitor
Setup>Parametersmenu;seepage3‐18.
IfAgentHWFail‐O2Sensorisdisplayedafteractivationofthe 
parameter,replacetheO2sensorasdescribedon
page14‐13.